Geared-up starter.



n. T. BROWNLEE.

GEARED-UP STARTER. APPLICATION FILED JUNE 5. 1914.

1,156,863. Patented 0013121915.

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UNITED s'ra'rns PATENT OFFICE.

DALMAR T. BROWNLEE, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE F. W.SPACKE MACHINE COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OFINDIANA.

GEARED -UP STARTER.

Specification of Letters Patent.

Patented Oct. 12, 1915.

Application filed June 5, 1914. Serial N 0. 843,150.

.a citizen of the United States, residing at Indianapolis, in the countyof Marion and State of Indiana, have invented a new and useful Geared-UpStarter, of which the following is a specification.

The object of my invention is to produce a starting gear for internalcombustion engines of'such character that it Wlll be automaticallythrown into and out of operative association with the shaft of themotor.

The accompanying drawings illustrate my invention.

Figure 1 is an elevation in partlal axlal section of myimproved device;Fig. 2 an end elevation; and Fig. 3 a fragmentary sectional detail. 7

In the drawings, 10 indicates the engine shaft to which power is to beapplied through my apparatus in starting it and which is subsequently tobe driven under power applied from the engine. Secured to the end ofshaft 10 is a ratchet toothed clutch member 11. Arranged adjacent theend of shaft 10 is a bracket 12 which carries a stud shaft 13 inalinement with shaft 10 and a shaft 14 which is parallel to shafts 10and 13. Journaled upon the stud shaft 13 is a gear 15, the teeth 15 ofwhich are set spirally as indicated in Fig. 1. That end of the hub ofgear 15 which is adjacent clutch 11 is provided with oppositely setratchet teeth 16 which are adapted to mesh with the teeth of a clutchmember 11. The length of the hub of gear 15 is such however that theclutch teeth 16 may be entirely withdrawn from the teeth of clutchmember 11. Attached to shaft 14 is a gear 17 preferably larger indiameter than the gear 15 and having spirally set teeth meshing with theteeth of gear 15, the two spirals being so set that, when driving forceis applied in any manner, as by crank 18, to shaft 14 to rotate gear 17in the direction indicated by the arrow, and a slight resistance toturning is offered by gear'15, the initial movement of gear 15 will beone of combined rotation and axial projection which will project theteeth 16 of gear 15 into the teeth of the clutch member 11, whereupondriving force will be transmitted to the shaft 10. Immediately upon areversal. of the direction of transmission of driving force betweenshafts 10 and 14, as when the engine starts to operate under its ownpower in the direction indicated by the arrow, the teeth of clutchmember 11 as well as the spiral teeth of the gears 15 and 17 willoperate to drive gear 15 axially so as to break the meshing of theratchet teeth.

Gear 15 may be so fitted upon the stud shaft 13 that sufficientresistance will be offered to turning of the gear 15 to cause theoperation above described but I have found it desirable to insure asufficient resistance by providing the stud-shaft 13, within the hub ofgear 15, with a diametrical pocket 21 in which is mounted a light coilspring 22 having a normal length slightly in excess of the diameter ofthe stud shaft, and in which are also mounted two small rivets or headedpins 23, with their heads outwardly presented and engaged by the ends ofthe spring 22,

the arrangement being such that, when the parts are assembled in themanner indicated in Fig. 3, the heads of the rivets 23 will be,

urged outwardly against the interior of the bore of gear 15 with a lightforce sufficient to insure some turning resistance in the gear 15.

I claim as my invention:

The combination of a driving gear, a driven gear ournaled upon a studshaft, the said two gears having meshing spiral teeth and the drivengear being axially movable upon the stud shaft, and friction meansarranged within the driven-gear to lightly resist rotation thereof, thesaid friction means comprising a spring and friction block mounted in atransverse bore of the stud shaft.

In witness whereof, I, have hereunto set my hand at Indianapolis,Indiana, this twenty-seventh day of May, A. D. one thousand nine hundredand fourteen.

.DALMAR T. BROWVNLEE.

Nitnesses:

JOSEPHINE GAsPER, G. B. ScHLEY.

